EP1175259A1 - Corps en dioxyde de titane, et procede de fabrication et d'utilisation dudit corps - Google Patents

Corps en dioxyde de titane, et procede de fabrication et d'utilisation dudit corps

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Publication number
EP1175259A1
EP1175259A1 EP00912440A EP00912440A EP1175259A1 EP 1175259 A1 EP1175259 A1 EP 1175259A1 EP 00912440 A EP00912440 A EP 00912440A EP 00912440 A EP00912440 A EP 00912440A EP 1175259 A1 EP1175259 A1 EP 1175259A1
Authority
EP
European Patent Office
Prior art keywords
titanium dioxide
hours
pore diameter
surface area
grain size
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP00912440A
Other languages
German (de)
English (en)
Other versions
EP1175259B1 (fr
Inventor
Bernd Proft
Elke Hirschberg
Barbara Seling
Sonja Weyand
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Venator Germany GmbH
Original Assignee
Sachtleben Chemie GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sachtleben Chemie GmbH filed Critical Sachtleben Chemie GmbH
Publication of EP1175259A1 publication Critical patent/EP1175259A1/fr
Application granted granted Critical
Publication of EP1175259B1 publication Critical patent/EP1175259B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/28016—Particle form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28002—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
    • B01J20/28004—Sorbent size or size distribution, e.g. particle size
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
    • B01J20/28042—Shaped bodies; Monolithic structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J20/28057—Surface area, e.g. B.E.T specific surface area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J20/28069—Pore volume, e.g. total pore volume, mesopore volume, micropore volume
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
    • B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J20/28078—Pore diameter
    • B01J20/28083—Pore diameter being in the range 2-50 nm, i.e. mesopores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • B01J21/063—Titanium; Oxides or hydroxides thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/40—Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/61—Surface area
    • B01J35/613—10-100 m2/g
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/61—Surface area
    • B01J35/615—100-500 m2/g
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/63—Pore volume
    • B01J35/633—Pore volume less than 0.5 ml/g
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
    • B01J35/64—Pore diameter
    • B01J35/647—2-50 nm
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/46—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on titanium oxides or titanates

Definitions

  • Shaped bodies made of titanium dioxide process for their production and their use
  • the invention relates to moldings made of titanium dioxide with an average grain size d 50 of 0.01 to 50 mm, a process for their production and their use.
  • Such shaped titanium bodies which are generally used for fixed bed or fluidized bed systems, must have a sufficiently high strength, since otherwise the catalyst disintegrates when the reactor is filled and / or is comminuted by the gas pressure, the heat load and dynamic load during the reaction, or is subject to strong abrasion.
  • US-A-4 113 660 relates to a process for the production of shaped bodies serving as catalysts or as catalyst supports with improved mechanical strength, which mainly consist of titanium dioxide. These moldings are produced in such a way that titanium dioxide or a precursor substance of titanium dioxide is subjected to a calcining treatment at temperatures from 200 to 800 ° C. in the presence of metatitanic acid sol or gel.
  • US-A-4 061 596 relates to a process for the production of titanium dioxide shaped bodies, wherein titanium dioxide is calcined at temperatures from 400 to 800 ° C. and the calcined titanium dioxide is a mineral acid or carboxylic acid or aluminum oxide or an intermediate stage of the aluminum oxide selected from aluminum hydroxide. Aluminum oxide sol and aluminum salts is added.
  • the molded bodies produced from this mixture are subjected to a calcining treatment at 300 to 800 ° C.
  • the molded articles treated in this way are said to have improved mechanical strength.
  • DE-C-41 41 936 describes a process for the production of pellets consisting of titanium dioxide, in which metatitanic acid or orthotitanic acid without additives at a temperature of 120 to 250 ° C and a pressure of 2 to 40 bar for a period of 0 , 1 to 30 hours in the presence of water and then dried.
  • This substance is then formed into pellets in a pelletizer with the addition of water and the pellets are treated at a temperature of 100 to 1000 ° C.
  • a pelletizing plate or a rotating drum serves as the pelletizing device hydrothermally treated metatitanic acid or orthotitanic acid is applied to the respective pelletizing device and granulated while spraying water.
  • the pellets produced have a relatively high compressive strength of 3 to 10 N on average, so that they can be used as bed material in fixed bed and fluidized bed systems.
  • titanium dioxide existing molded article having an average grain size d 5 o of 0.01 to 50 provide mm, which have improved compressive strength, m which the proportion of foreign ions is abnormally low, the abrasion resistance is large and the can be produced with normal effort without the use of binders.
  • shaped bodies made of titanium dioxide which are each composed of primary crystallites of titanium dioxide of the anatase modification with a crystallite size according to Scherrer of up to 40 n, preferably 10 to 30 nm, the specific surface area of which is 20 to 150 m 2 / g, whose pore volume is 0.1 to 0.45 cm 3 / g and whose pore diameter is 100 to 300 A.
  • the best compressive strength is achieved if primary crystallites with a grain size of 4 to 10 nm or with a grain size of 10 to 15 nm are used for the moldings.
  • the production of the shaped bodies made of titanium oxide takes place in accordance with the invention in such a way that the paste-like mixture of titanium dioxide powder and sol consisting of primary crystallites and / or 1 to 15% nitric acid produced moldings dried and then at a temperature of 400 to 1000 ° C for a period of 3 hours, preferably 0.5 to 2 , 5 hours.
  • the crystallite size after annealing is 10 to 40 ⁇ m.
  • the pasty mixture consists of 1 to 50% by weight of titanium dioxide powder and 50 to 99% by weight of titanium dioxide sol and / or 1 to 15% nitric acid.
  • the titanium dioxide powder before the paste is manufactured at a temperature of 120 to 250 ° C and a pressure of 2 to 40 bar for a period of 0.1 to Pretreated in the presence of water for 30 hours and dried.
  • the molded bodies composed of titanium dioxide according to the invention can also be produced in that the titanium dioxide powder consisting of primary crystallites is shaped into pellets with the addition of water, the pellets are annealed at temperatures of 300 to 500 ° C., then with titanium dioxide sol and / or 1 to 15% nitric acid soaked, then dried and finally annealed at a temperature of 400 to 1000 ° C for up to 3 hours, preferably 1 to 2 hours.
  • the advantages achieved with the invention can be seen in particular in the fact that the compressive strength of the cylindrical and prismatic shaped bodies is at least 7 N / mm, that of the spherical shaped bodies is at least 15 N and the abrasion resistance is ⁇ 1%.
  • the molded articles After 400 ° C annealing, the molded articles have an average compressive strength of 7 N / mm per molded article, a specific surface area of 125 m 2 / g, a pore volume of 0.41 ml / g, an average pore diameter of 131 A and Abrasion resistance of ⁇ 1%. After 600 ° C annealing, the molded articles have an average compressive strength of 9 N / mm per molded article, a specific surface area of 75 mVg, a pore volume of 0.34 ml / g, an average pore diameter of 181 A and an abrasion resistance of ⁇ 1 %.
  • the molded articles After the 800 ° C annealing, the molded articles have an average compressive strength of 23 N / mm per molded article, a specific surface area of 22 m 2 / g, a pore volume of 0.15 ml / g, an average pore diameter of 260 A and Abrasion resistance of ⁇ 1%.
  • a titanium dioxide powder of the anatase modification is mixed with water, the mixture is treated at a temperature of 175 ° C. and a pressure of 20 bar.
  • the titanium dioxide powder pretreated in this way is then dried with an average primary crystallite size according to Scherrer d 50 of 12 nm and a specific surface area of 103 m 2 / g and then with 66% by weight titanium dioxide sol with a content of 40% by weight.
  • the paste is extruded into strands with a diameter of 4 mm, from which 5 to 15 mm long shaped bodies are cut, the shaped bodies are dried and 150 g shaped bodies are annealed at a temperature of 400 ° C., 600 ° C. and 800 ° C. for 2 hours .
  • the molded articles After the 400 ° C annealing, the molded articles have an average compressive strength of 8 N / mm per molded article, one specific surface area of 100 m 2 / g, a pore volume of o 0 0, .3344 mmll // gg ,, eeiinneenn mmiittttlleerreenn Poorreenndameter of 137 A and an abrasion resistance of ⁇ 1%.
  • the molded articles After 600 ° C annealing, the molded articles have an average compressive strength of 13 N / mm per molded article, a specific surface area of 63 m 2 / g, a pore volume of 0.27 ml / g, an average pore diameter of 170 A and Abrasion resistance of ⁇ 1%.
  • the molded articles After 800 ° C annealing, the molded articles have an average compressive strength of 24 N / mm per molded article, a specific surface area of 13 m 2 / g, a pore volume of 0.08 ml / g, an average pore diameter of 254 A and an abrasion resistance of ⁇ 1%.
  • the titanium dioxide powder pretreated according to the second exemplary embodiment is mixed with 63% by weight titanium dioxide sol with a titanium content of 40% by weight to form a dimensionally stable paste which is extruded into strands with a diameter of 4 mm.
  • the strands are treated as shown in the second exemplary embodiment.
  • the molded articles After 400 ° C annealing, the molded articles have an average compressive strength of 14 N / mm per molded article, a specific surface area of 100 m 2 / g, a pore volume of 0.35 ml / g, an average pore diameter of 254 A and an abrasion resistance of ⁇ 1 t. After the 600 ° C annealing, the molded articles have an average compressive strength of 21 N / mm per molded article, a specific surface area of 56 m 2 / g and a pore volume of o
  • the molded articles After the 800 ° C annealing, the molded articles have an average compressive strength of 22 N / mm per molded article, a specific surface area of 13 m 2 / g, a pore volume of o
  • a titanium dioxide powder prepared according to the second exemplary embodiment is mixed with 5% nitric acid to form a paste and then extruded into strands of 4 mm in diameter, shaped bodies 5 to 15 mm long are cut and, as described in the second exemplary embodiment, treated further.
  • the molded articles After 400 ° C annealing, the molded articles have an average compressive strength of 13 N / mm per molded article, a specific surface area of 83.2 m 2 / g and a pore volume of
  • the molded articles After 600 ° C annealing, the molded articles have an average compressive strength of 22 N / mm per molded article, one specific surface area of 58 m 2 / g, a pore volume of o 0 0, .2222 mmll // gg ,, eeiinneenn mmiittttlleerreenn Poorreenni diameter of 149 A and an abrasion resistance of ⁇ 1%.
  • the molded articles After the 800 ° C annealing, the molded articles have an average compressive strength of 40 N / mm per molded article, a specific surface area of 10.4 m 2 / g, a pore volume of 0.06 ml / g, and an average pore diameter of 241 A. and a wear resistance of ⁇ 1%.
  • Titanium dioxide powder of the anatase modification is mixed with water, the mixture is treated at a temperature of 175 ° C. and a pressure of 20 bar and then dried.
  • This hydrothermally pretreated titanium dioxide powder with an average primary crystallite size according to Scherrer d 50 of 12 nm and a specific surface area of 103 m 2 / g is formed into pellets by spraying water using a pelletizing plate. The pellet diameter after sieving is 2.5 to 3 mm.
  • the pellets are dried at a temperature of 110 ° C and then annealed at a temperature of 400 ° C for 3 hours.
  • the pellets are then soaked in titanium dioxide sol with a titanium dioxide content of 35% by weight under vacuum, dried again at 110 ° C.
  • the moldings have an average compressive strength of 16 N per pellet, a specific surface area of 98 m 2 / g, a pore volume of 0.37 ml / g, an average pore diameter of 151 A and an abrasion resistance of ⁇ 1%.
  • the moldings After the 600 ° C annealing, the moldings have an average compressive strength of 19 N per pellet, a specific surface area of 67 m 2 / g, a pore volume of 0.30 ml / g, an average pore diameter of 176 A and an abrasion resistance of ⁇ 1%.
  • the molded articles After the 800 ° C annealing, the molded articles have an average compressive strength of 41 N per pellet, a specific surface area of 19.2 m 2 / g, a pore volume of 0.12 ml / g, an average pore diameter of 259 A and Abrasion resistance of ⁇ 1%.
  • the proportion of femoral particles ⁇ 4 mm is sieved from 100 g test specimens
  • the closed container is now rotated about its longitudinal axis 15 at 120 revolutions per minute
  • the container is emptied and the proportion of fines of ⁇ 1 mm is sieved.
  • the abrasion m% is calculated from the weight difference between the two sieve overflows.
  • the specific surface area of the shaped bodies is determined using the BET method.
  • Pore volume and pore diameter are determined using the nitrogen desorption method and evaluated using the BJH method.
  • the moldings have a large specific surface area, a large pore volume with a narrow pore spectrum, a high compressive strength, a high abrasion resistance, a high thermal stability and are resistant to acids, alkalis and oxidizing agents. Due to the semiconductor properties of titanium dioxide, the moldings show UV activity. These properties make the moldings suitable, for example, as catalysts, as photocatalysts, as catalyst supports, as filters / frits, as stationary phases in chromatography, as pharmaceutical retardants and as oxygen sensors.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Materials Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Nanotechnology (AREA)
  • Catalysts (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

Pour améliorer la résistance à la pression de corps en dioxyde de titane présentant une taille moyenne des grains d50 de 0,01 à 50 mm, lesdits corps sont constitués de cristallites primaires de dioxyde de titane de type anatase, possèdent une surface spécifique de 20 à 150 m2/g, un volume des pores de 0,1 à 0,45 cm3/g et un diamètre des pores de 100 à 300 ANGSTROM . Ces corps sont fabriqués soit par transformation en boulettes d'un mélange pâteux de poudre de dioxyde de titane et de sol de dioxyde de titane et/ou d'acide nitrique à raison de 1 à 20 %, par séchage et calcination à une température de 400 à 1000 DEG C pendant une durée de 0,5 à 3,5 heures, soit par formation de boulettes à partir de poudre de dioxyde de titane avec ajout d'eau, par recuit à des températures de 300 à 500 DEG C, par imprégnation sous vide avec du sol de dioxyde de titane ou de l'acide nitrique à raison de 1 à 20 %, par séchage et enfin par recuit à une température de 400 à 1000 DEG C pendant 0,5 à 3 heures. Lesdits corps peuvent être utilisés par exemple comme catalyseurs, photocatalyseurs, supports de catalyseur, filtres/pièces frittées, comme phase stationnaire en chromatographie, support de médicament à effet retard, et comme détecteur d'oxygène.
EP00912440A 1999-03-26 2000-01-31 Corps en dioxyde de titane, et procede de fabrication et d'utilisation dudit corps Expired - Lifetime EP1175259B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19913839A DE19913839A1 (de) 1999-03-26 1999-03-26 Formkörper aus Titandioxid, Verfahren zu deren Herstellung und deren Verwendung
DE19913839 1999-03-26
PCT/EP2000/000744 WO2000058007A1 (fr) 1999-03-26 2000-01-31 Corps en dioxyde de titane, et procede de fabrication et d'utilisation dudit corps

Publications (2)

Publication Number Publication Date
EP1175259A1 true EP1175259A1 (fr) 2002-01-30
EP1175259B1 EP1175259B1 (fr) 2003-10-01

Family

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Family Applications (1)

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EP00912440A Expired - Lifetime EP1175259B1 (fr) 1999-03-26 2000-01-31 Corps en dioxyde de titane, et procede de fabrication et d'utilisation dudit corps

Country Status (7)

Country Link
US (1) US6660243B1 (fr)
EP (1) EP1175259B1 (fr)
AT (1) ATE250976T1 (fr)
DE (2) DE19913839A1 (fr)
DK (1) DK1175259T3 (fr)
ES (1) ES2208288T3 (fr)
WO (1) WO2000058007A1 (fr)

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GC0000360A (en) * 2000-05-04 2007-03-31 Shell Int Research A catalyst support and a supported metal catalyst, a process for their preparation, and the use of the catalyst
US7119039B2 (en) * 2003-03-24 2006-10-10 Carbo Ceramics Inc. Titanium dioxide scouring media and method of production
US7255815B2 (en) * 2003-03-24 2007-08-14 Carbo Ceramics Inc. Titanium dioxide scouring media and method of production
US7988947B2 (en) * 2004-11-23 2011-08-02 E. I. Du Pont De Nemours And Company Mesoporous oxide of titanium
CN100333830C (zh) * 2005-04-30 2007-08-29 东南大学 锐钛矿型二氧化钛溶胶的制备方法
US7468175B2 (en) * 2006-12-13 2008-12-23 Worthington Technologies, Llc Highly photosensitive titanium dioxide and process for forming the same
DE102007054848B4 (de) 2007-11-16 2018-09-27 Erlus Aktiengesellschaft Keramischer Formkörper mit einer photokatalytisch aktiven, luftreinigenden, transparenten Oberflächenbeschichtung, Verfahren zur Herstellung desselben und dessen Verwendung
CN102076614A (zh) * 2008-05-02 2011-05-25 巴斯夫欧洲公司 光催化活性TiO2成型体
EP2583957A1 (fr) * 2011-10-18 2013-04-24 LANXESS Deutschland GmbH Butène linéaire à partir d'isobutanol
RU2477257C1 (ru) * 2011-12-26 2013-03-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Санкт-Петербургский государственный университет" (СПбГУ) Композиция на основе нанокристаллического диоксида титана, способ ее изготовления и способ применения композиции для получения фотокаталитического покрытия на стекле
CN103566877A (zh) * 2013-09-26 2014-02-12 蚌埠华纺滤材有限公司 一种吸收电磁波改性活性炭及其制备方法
JP6796492B2 (ja) * 2014-02-21 2020-12-09 ハンツマン・ピー・アンド・エイ・ジャーマニー・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング ＴｉＯ２ベースの触媒前駆体材料、その製造、およびその使用

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DE50003904D1 (de) 2003-11-06
DK1175259T3 (da) 2003-12-22
DE19913839A1 (de) 2000-09-28
ATE250976T1 (de) 2003-10-15
US6660243B1 (en) 2003-12-09
EP1175259B1 (fr) 2003-10-01
ES2208288T3 (es) 2004-06-16
WO2000058007A1 (fr) 2000-10-05

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